Multiply 10s and 100s & Estimate Products

 $20\times40=$  

• 800

• 80

• 600

• 8,000

Tags

CCSS.3.OA.A.1

 $70\times70=$  

• 4,800

• 49,000

• 490

• 4,900

Tags

CCSS.3.NBT.A.3

CCSS.3.OA.A.1

CCSS.3.OA.B.5

 $60\times50=$  

• 300

• 3,000

• 30,000

• 3,500

Tags

CCSS.3.OA.A.1

CCSS.3.OA.B.5

 $900\times40=$  

• 3,200

• 3,600

• 36,000

• 360,000

Tags

CCSS.3.NBT.A.3

 $70\times800=$  

• 56,000

• 5,600

• 54,000

• 560,000

Tags

CCSS.3.NBT.A.3

CCSS.3.OA.A.1

CCSS.3.OA.B.5

 $900\times500=$  

• 4,500

• 400,000

• 45,000

• 450,000

Tags

CCSS.3.NBT.A.3

CCSS.3.OA.A.1

CCSS.3.OA.B.5

 $400\times500=$  

• 2,000

• 200,000

• 20,000

• 90,000

Estimate the product by rounding both factors.

 $58\times31\approx$  

•  $60\times30=1,800$  

•  $60\times30=180$  

•  $50\times30=1,500$  

•  $50\times30=150$  

Tags

CCSS.3.NBT.A.1

Estimate the product by rounding both factors.

 $42\times71\approx$  

•  $40\times70=280$  

•  $40\times70=2,800$  

•  $40\times70=2,700$  

•  $50\times70=3,500$  

Tags

CCSS.3.NBT.A.1

Estimate the product by rounding both factors.

 $39\times56\approx$  

•  $30\times50=1,500$  

•  $40\times60=240$  

•  $40\times60=2,400$  

•  $40\times50=2,000$  

Tags

CCSS.3.NBT.A.1